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隐藏图片中的敏感信息 – 译学馆
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隐藏图片中的敏感信息

Photoshop Playbook: Hiding Sensitive Information in Images

用模糊工具和滤镜隐藏照片中的敏感信息
Hiding Sensitive Information in Images Using Blur & Filters
如今 人们抓拍分享的照片远比以前多了
People are capturing and sharing more photos than ever before.
但是有时候你希望分享某张照片
But sometimes you want to share an image
却不想分享其中全部的信息
but not all of its contents.
也许图片的一部分或图中的某个人
That might be part of the image or a person in the image
希望被你隐藏
that you want to anonymize.
所以我来教你几招小办法,让你能使用Photoshop完成这个任务
So let me show you a couple of quick ways to do that using Photoshop.
第一个例子中 有一个很显眼的车牌号信息
In this first example, we have a very visible license plate.
咱们可以放大看看咱们要面对的是什么
So let’s zoom in and take a look at what we are working with.
OK 首先我要做的是选中它
Okay, the first thing I want to do is select that.
有许多工具可以干这个
And there are a lot of tools to do that.
我准备用多边形套索工具
I’m gonna use the Polygonal Lasso tool.
我们只需要点选
And we’re just gonna click around the area
我们需要模糊掉的区域
that we want to blur out.
看起来不错了
That looks good.
然后我要稍微编辑一下选区
Next thing I’ll do is modify that selection a little bit.
我要羽化它
I wanna feather that.
几像素就好
Just a few pixels is okay.
现在它看起来更自然了
It’ll look a little bit more natural.
完成这个任务最快的办法应该是滤镜
Probably the fastest way to do this is with the Filter.
我们选中滤镜-像素化-马赛克
We come down to the Pixelate, Mosaic Filter.
然后我们就迅速的隐藏了它
We can anonymize that pretty quickly.
这个工具处理类似车牌号这样的东西很方便
And that works fine for something like the license plate.
如果你希望再稍作润色
If you want to touch it up a little,
我们可以放大一下 然后使用模糊工具
We can zoom in more and grab our Blur Brush.
在它的边缘上涂抹一下
And just work around the edge with that.
用它来搞整个牌照是不太现实的
It’s not really practical for the whole license plate.
但是可以用来处理我们漏掉的小细节
But it’s good for picking up a little detail we might have missed.
所以像素化滤镜非常适用于搞定车牌照
So Pixelate (is) great for license plate.
接下来我们看看用来处理人像的小技巧
Let’s look at a different trick for people.
OK 看 家庭合照
Okay. So, common shot of a family.
这次我要搞定的是
What I want to do in this case is
模糊掉镜头里这两个孩子
blur out both of the kids in the shot.
为了干这个 我准备使用椭圆选框
And for this, I’m gonna use my Elliptical Marquee.
然后选中一位
And just select one.
我定好选框之后可以在周围移动它
I can move that around after I selected it.
然后我可以按住Shift键来拖动另一个
And then I’m gonna hold my Shift key to drag another one.
不需要非常完美 一样能奏效
Doesn’t have to be perfect. That will work just fine.
我需要羽化一下这个选区
I do want to go with a more feathered selection for this one.
我们可以来…8像素吧
So let’s do something like…eight pixels.
然后我们选中滤镜-模糊
And for this, we’ve got a lot of Blur tools.
我需要使用镜头模糊
I like to use Lens Blur.
在这里放大一下
Zoom in a little bit here.
然后我们可以滑动半径范围
And we can move our Radius.
从零,到能隐藏信息的数值
From none, to the amount we need to anonymize these guys.
我们使用镜头模糊的技巧
Now the trick with using Lens Blur
就是让模糊的区域不那么突兀
is it’s not quite so distracting.
你认不出来这个人是谁
You can’t tell who the people are,
但仍然能看出是个人
but they still look like people.
这差不多就是我要的程度了
Get that where I wanted.
看起来不错
That will work just fine.
现在 最后一步了
Now, the last step here,
我们把它使劲放大一下
Let’s zoom in real close.
你会注意到这片模糊的区域
And you’ll notice that the blurred region
在结构上和剩余的部分不太一样
looks a little bit different in structure than the rest of it.
给它加上一点噪点可以改善很多
Adding it a little taste of noise makes a big difference.
所以我们搞一点噪点
So let’s bring in just a little bit of noise.
然后它的结构就和其余部分一样了
So it matches the structure with the rest of the image.
好了 最后一个例子
All right, for this last example,
如果我放大背景
If I zoom in on the background,
我可以看见这儿有几个行人
I can see that there are some strangers back there.
事实上 没什么比他们更煞风景了
Truthfully, they are more distracting than anything.
这时候 我希望你看看你的照片
So at this point, I encourage you to look at your image and see
能修改信息吗
Can I crop some information out?
能把它变暗吗
Can I darken it?
也许我需要使用选择性模糊
In this case maybe I want to use a Selective Blur?
如果你不会的话
And to that point,
你需要查看我们关于选择性聚焦的视频
you should check out our video on Selective Focus
也就是我们对付光圈模糊的那一课
where we deal with making an Iris Blur
这就是几条隐藏信息的快速方法
So these are some really quick ways to anonymize your photos.
我希望你分享在网上的照片能更加安全
And I hope that helps you share more of them online safely.

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视频概述

如何让你分享出去的照片更安全?你需要会使用滤镜和模糊工具来处理图片中的敏感信息。

听录译者

雨过天晴

翻译译者

B考拉尤里卡

审核员

赖皮

视频来源

https://www.youtube.com/watch?v=DCHKINiAEzE

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